/*
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 #include "libavutil/libm.h"
 #include "libavcodec/celp_math.c"
 

 static inline void IsAlmostEqual(float A, float B, float epsilon)
 {
     float diff = fabsf(A - B);
     float absa = fabsf(A);
     float absb = fabsf(B);
     float largest = (absb > absa) ? absb : absa;
     av_assert0(diff <= largest * epsilon);
 }
 

 int main(void)
 {
     int i;
     const float f1[3]   = {0.0,  1.1,  2.2};
     const float f2[3]   = {3.3,  4.4,  5.5};
     const int16_t i1[3] = {6,  7,  8};
     const int16_t i2[3] = {9, 10, 11};
 
     float   r = ff_dot_productf(f1, f2, FF_ARRAY_ELEMS(f1));
     int64_t d = ff_dot_product(i1, i2, FF_ARRAY_ELEMS(i1));
 
     IsAlmostEqual(16.94f, r, 0.000001f);
     av_assert0(212 == d);
 
     for (i = 1024; i >= 1; i/=2)
         av_assert0(ff_log2_q15(i) == (1<<15)*((int)log2(i))+(1<<2));
 
     return 0;
 }